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Fits: Yamaha Raptor 660 2001 - 2005
Special Notes:
Comes with slide springs.
Improved throttle response and approximately a 5% power gain throughout the entire power band.
Fully adjustable to allow the use of...

Fits: Honda TRX 450R 2004–2005
Improved throttle response and approximately a 5% power gain throughout the entire power band.
Fully adjustable to allow the use of well designed after market pipes and filters...

Fits: Yamaha YFZ 450 2004–2005
Improved throttle response and approximately a 5% power gain throughout the entire power band.
Fully adjustable to allow the use of well designed after market pipes and...

Fits: Yamaha YFZ 450 2006–2009
Improved throttle response and approximately a 5% power gain throughout the entire power band.
Fully adjustable to allow the use of well designed after market pipes and...